class Solution {
    public boolean isToeplitzMatrix(int[][] matrix) {
        for (int i=0;i<matrix.length-1;i++) {
            for (int j=0;j<matrix[i].length-1;j++) {
                if (matrix[i][j] != matrix[i+1][j+1]) return false;
            }
        }
        
        return true;
    }
}